# arrow_back What is a dot product in physics?

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What is a dot product in physics?

 dot product: $\underline{a} \cdot \underline{b} = a_1 b_1 + a_2b_2 + ... = |\underline{a}| |\underline{b}| \cos{\theta}$, $W = \underline{F} \cdot \underline{d}$ where F is force and d is distance
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